package com.sky.handler;

import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.List;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Result methodNotValid(MethodArgumentNotValidException ex){
        BindingResult bindingResult = ex.getBindingResult();
        List<ObjectError> allErrors = bindingResult.getAllErrors();
        StringBuilder stringBuilder = new StringBuilder();
        for(ObjectError allError:allErrors){
            String defaultMessage = allError.getDefaultMessage();
            stringBuilder.append(defaultMessage).append(";");
        }
        return Result.error(stringBuilder.toString());
    }


}
